diff --git a/rfc.cabal b/rfc.cabal
--- a/rfc.cabal
+++ b/rfc.cabal
@@ -1,5 +1,5 @@
 name:                rfc
-version:             0.0.0.19
+version:             0.0.0.20
 synopsis:            Robert Fischer's Common library
 description:         An enhanced Prelude and various utilities for Aeson, Servant, PSQL, and Redis that Robert Fischer uses.
 homepage:            https://github.com/RobertFischer/rfc#README.md
diff --git a/src/RFC/Miso/String.hs b/src/RFC/Miso/String.hs
--- a/src/RFC/Miso/String.hs
+++ b/src/RFC/Miso/String.hs
@@ -9,10 +9,14 @@
   ( module RFC.Miso.String
   ) where
 
-import           Data.Function           (id)
+import           Data.Function           (id, (.))
 import           Data.String             (String)
 import           Data.String.Conversions
 import           Miso.String             (MisoString, ToMisoString (..))
+import           RFC.Data.UUID           as UUID
+
+instance {-# OVERLAPPING #-} ConvertibleStrings UUID.UUID MisoString where
+  convertString = toMisoString . UUID.toString
 
 instance {-# OVERLAPPING #-} ConvertibleStrings MisoString MisoString where
   convertString = id